79L05 transistor integrated circuit Integrated Circuit Chip Negative-Voltage Regulators

Negative-Voltage Regulators

• 3-Terminal Regulators
• Output Current Up to 100 mA
• No External Components Required
• Internal Thermal-Overload Protection
• Internal Short-Circuit Current Limiting
• Direct Replacement for Motorola MC79L00 Series

description

This series of fixed negative-voltage integrated-circuit voltage regulators is designed for a wide range of applications. These include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used to control series pass elements to make high-current voltage-regulator circuits. One of these regulators can deliver up to 100 mA of output current. The internal current-limiting and thermal-shutdown features make them essentially immune to overload. When used as a replacement for a zener-diode and resistor combination, these devices can provide effective improvement in output impedance of two orders of magnitude, with lower bias current.

absolute maximum ratings over operating free-air temperature range

(unless otherwise noted)†

Input voltage: 79L05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -30 V

Operating free-air, case, or virtual junction temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C

Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds  . . . . . . . . . . . . . . . . . . . . . . . 260°C

Storage temperature range, Tstg  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C

equivalent schematic

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